Bulla: Try all of the basic training and then when you press Z, Vegeta and Bulma will switch with Bulla(Useless).
Desert Costume Bulma: Beat 14 of the Ultimate Battle stages and in the Data Center, press Z and Bulma will have an Arabian like costume seen in DB(Useless).
"What if" scenarios: When you fighting and opponent and the battle requirement says ???????, then if you manage to beat it you will unlock one. There are 3 in all: Fateful Brothers, Beautiful Treachery, and Destined Rivals.
Grandpa Gohan: 1. In Destined Rivals, go to Kami's Lookout and fight Grandpa Gohan to get "Master Roshi's Pupil" item. 2. In the Android Saga go to "Cell Games Begin!" go to the Mountain Road and survive in the battle against Yamcha OR in the Buu Saga in "Two Majin Buu's" do the same thing(recomended, because you have to be Hurcule in the First option but you can be Buu in the second one). Doing this dificult task will give you the "Fox Mask". 3. Combine and you get a mediocre character......!
Added by: cheesemonkey Jan 1st 2007, ID#105